Our grade: 4 checks
Based on public data, not a full audit. See how we grade. Something changed? Request a re-grade.
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Write a reviewWhy it got an A
PlanetScale's own server, hosted at mcp.pscale.dev/mcp/planetscale
(Streamable HTTP, sign in with OAuth; service tokens work for CI and headless
clients). The grade describes this hosted server: the older local pscale mcp
command has been removed, and the Claude plugin (planetscale/claude-plugin,
Apache-2.0) only wires it up and adds database skills. Access is set per
organization or per database as none, read-only or full, and admins can turn
on a read-only-queries setting that blocks the write tool; an insights-only
endpoint leaves out both SQL tools. Reads run on replicas by default.
Biggest deduction: planetscale_execute_write_query can run INSERT, UPDATE,
DELETE and DDL on production branches, and while PlanetScale prompts the model
to ask a human before DDL and blocks UPDATE/DELETE without WHERE and TRUNCATE,
it advises caution with write access; the server source is not public and its
maintainers could not be counted, so grant read-only, keep approvals on in
your client, and point it at a development branch first.
How to connect
/plugin marketplace add planetscale/claude-plugin
/plugin install planetscale@planetscaleIs PlanetScale MCP Server safe?
Is PlanetScale MCP Server safe to use?
PlanetScale MCP Server grades A (strong public trust signals). Upkeep is hard to verify (closed source or a single maintainer), so pin the version you tested. It runs locally over stdio, so it acts with your machine's access.
Does PlanetScale MCP Server have known vulnerabilities?
Not in our current data: it has no open CVEs or advisories. We re-check as new ones are published.
Does PlanetScale MCP Server support authentication?
Yes. It requires a login, so access can be tied to a person or a scoped key.
Alternatives in Databases & Data Stores
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- A ClickHouse MCP ServerClickHouse's official hosted MCP server for ClickHouse Cloud - read-only SELECT queries, schema browsing, and service, backup, ClickPipes and billing tools, with OAuth or a scoped API key.
- A Databricks Managed MCP ServersDatabricks-hosted MCP servers in each workspace for Genie, SQL, Unity Catalog functions and vector search, signed in with OAuth and limited by Unity Catalog.
- A MongoDB MCP ServerQuery and administer MongoDB and Atlas clusters from an agent.
- A Neon MCP ServerOfficial hosted Neon server to manage Postgres projects and branches, run SQL, and inspect schema.
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